* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: Roboto, sans-serif;
  }
  
  html,
  body {
    background-color: rgb(235, 235, 240);
  }
  
  table {
    border: 2px solid #000000;
    border-spacing: 0;
    border-collapse: collapse;
    transition: all 0.5s;
  }
  
  ul {
    list-style-type: none;
  }
  
  td {
    border: 1px solid #000000;
    text-align: center;
    vertical-align: middle;
  }
  
  td input {
    color: #000000;
    padding: 0;
    border: 0;
    text-align: center;
    width: 48px;
    height: 48px;
    font-size: 24px;
    background-color: #ffffff;
    outline: none;
    text-transform: uppercase;
    transition: all 0.5s;
  }
  
  input:disabled {
    background-color: #bbdefb;
  }
  
  tr:nth-child(3n) {
    border-bottom: 4px solid #000000;
  }
  
  tr:nth-child(3n + 1) {
    border-top: 4px solid #000000;
  }
  
  td:nth-child(3n) {
    border-right: 4px solid #000000;
  }
  
  td:nth-child(3n + 1) {
    border-left: 4px solid #000000;
  }
  
  .right-cell {
    box-shadow: inset 0px 0px 20px 3px forestgreen;
  }
  
  .wrong-cell {
    box-shadow: inset 0px 0px 20px 3px tomato;
  }
  
  .worning-cell {
    box-shadow: inset 0px 0px 20px 3px goldenrod;
  }
  
  /*Material Design*/
  
  .app-bar {
    background: #49599a;
    width: 100%;
    position: fixed;
    height: 64px;
    color: #fff;
    box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.14);
    z-index: 5;
    top: 0;
  }
  
  .bar-button {
    position: relative;
    background: transparent;
    border: none;
    outline: none;
    color: #fff;
    vertical-align: middle;
    padding: 0 22px;
    transition: all 0.5s;
  }
  
  .bar-button span {
    line-height: 64px;
    display: inline-block;
    vertical-align: middle;
  }
  
  .hamburger-button {
    float: left;
    left: 4px;
  }
  
  .bar-font {
    font-size: 18px;
    line-height: 64px;
  }
  
  .title {
    position: relative;
    float: left;
    left: 18px;
  }
  
  .more-button {
    float: right;
    /*right: 18px;*/
  }
  
  .hamburger-menu {
    background: rgba(0, 0, 0, 0.4);
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 25;
    width: 100vw;
    height: 100vh;
    display: none;
    opacity: 0;
    transition: 0.1s all;
  }
  
  .nav-menu {
    border-right: 1px solid rgba(0, 0, 0, 0.4);
    background: #fff;
    color: #212121;
    position: fixed;
    left: -256px;
    top: 0;
    bottom: 0;
    width: 256px;
    z-index: 26;
    font-size: 15px;
    box-shadow: 16px 0 24px 2px rgba(0, 0, 0, 0.14);
    transition: all 0.3s;
  }
  
  .nav-menu-blank {
    position: relative;
    left: 256px;
    width: 100%;
    height: 100%;
  }
  
  .nav-head {
    height: 172px;
    background: #5e92f3;
    position: relative;
  }
  
  .nav-head-img {
    position: relative;
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-radius: 50%;
    width: 96px;
    height: 96px;
    top: 16px;
    left: 16px;
    overflow: hidden;
  }
  
  .nav-head-img img {
    width: 100%;
    height: 100%;
  }
  
  .nav-head-title {
    color: #fff;
    position: absolute;
    bottom: 10px;
    margin-left: auto;
    margin-right: auto;
    left: 0px;
    right: 0;
    font-size: 22px;
    display: block;
    text-align: center;
  }
  
  .nav-items {
    margin-top: 12px;
  }
  
  .nav-item {
    font-weight: 700;
    display: block;
    color: #333;
    background: #0000;
    padding: 15px 0 15px 22px;
    letter-spacing: 1.1px;
    outline: none;
    border: none;
    width: 100%;
    text-align: left;
    margin: 0 !important;
  }
  
  .bar-footer {
    position: fixed;
    bottom: 12px;
    left: 10px;
  }
  
  .bar-footer-link {
    font-size: 12px;
    display: inline-block;
    margin: 0 8px;
    text-decoration: none;
    color: gray;
  }
  
  .body {
    width: 95%;
    max-width: 800px;
    margin: 96px auto 16px auto;
    display: flex;
  }
  
  .card {
    background: #fff;
    width: fit-content;
    box-shadow: 0 0 4px 0 rgba(0, 0, 0, 0.14);
    float: left;
    padding: 32px 32px 16px 32px;
  }
  
  .status {
    margin-left: 32px;
    padding-top: 10px;
    padding-left: 10px;
  }
  
  #game-number {
    font-size: 12px;
    color: gray;
  }
  
  .game-status {
    /*display: flex;
      flex-direction: column;
      justify-content: center;
      flex-flow: column;*/
    margin: 0 0 0 22px;
    height: 100%;
  }
  
  .game-status li {
    margin: 18px 0 0 0;
  }
  
  .vertical-adjust {
    margin: 12px 0;
  }
  
  .vertical-adjust span,
  .footer a {
    line-height: 24px;
    display: inline-block;
    vertical-align: middle;
  }
  
  .option-button {
    display: block;
    margin: 16px 8px 16px 30px;
    width: 130px;
    padding: 8px 10px;
    font-size: 16px;
    border: none;
    outline: none;
    box-shadow: 0 6px 10px 1px rgba(0, 0, 0, 0.14);
    border-radius: 2px;
    transition: all 0.5s;
    text-align: left;
  }
  
  .button {
    position: relative;
    overflow: hidden;
    cursor: pointer;
  }
  
  .option-button:hover {
    background: #1565c0;
  }
  
  .option-button:active {
    background: #3d7df4;
    box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.24);
  }
  
  .option-button span {
    vertical-align: middle;
    line-height: 24px;
  }
  
  .ripple {
    position: absolute;
    background: #fff;
    border-radius: 50%;
    width: 5px;
    height: 5px;
    animation: ripple-effect 1.1s 1 cubic-bezier(0.42, 0, 0.58, 1);
    opacity: 0;
  }
  
  @keyframes ripple-effect {
    0% {
      transform: scale(1);
      opacity: 0.4;
    }
    100% {
      transform: scale(100);
      opacity: 0;
    }
  }
  
  .timer {
    color: #1565c0;
    font-size: 32px;
    padding: 4px;
    box-shadow: 0 0 4px 0 rgba(0, 0, 0, 0.14);
    text-align: center;
  }
  
  .remain-table {
    position: relative;
    left: 0;
    right: 0;
    display: inline-block;
    margin: auto;
  }
  
  .remain-column {
    float: left;
    max-width: 64px;
  }
  
  .remain-cell {
    margin: 10px;
    text-align: center;
    border: solid 1px rgba(0, 0, 0, 0.2);
    box-shadow: 0 0 4px 0 rgba(0, 0, 0, 0.14);
  }
  
  .remain-cell div {
    padding: 5px 12px;
  }
  
  .remain-cell-header {
    background-color: #1565c0;
    color: white;
    font-weight: bold;
    border-bottom: solid 2px rgba(0, 0, 0, 0.2);
  }
  
  .red {
    background: #ff6659;
    color: #9a0007;
  }
  
  .gray {
    background: #808080;
    color: #404040;
  }
  
  .floating {
    position: fixed;
    bottom: 64px;
    right: 64px;
    z-index: 20;
  }
  
  .floating-btn {
    position: fixed;
    bottom: 48px;
    right: 48px;
    border-radius: 50%;
    padding: 12px;
    border: none;
    background-color: #1565c0;
    color: #fff;
    box-shadow: 0 6px 10px 0 rgba(0, 0, 0, 0.14);
    outline: none;
    z-index: 21;
  }
  
  .dialog {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    z-index: 50;
    display: none;
    transition: all 0.2s;
  }
  
  .dialog-content {
    top: -200px;
    background: #fff;
    width: 90%;
    max-width: 540px;
    height: fit-content;
    margin: auto;
    vertical-align: middle;
    box-shadow: 0 24px 38px 3px rgba(0, 0, 0, 0.14);
    z-index: 51;
    transition: all 0.5s;
  }
  
  .dialog-header {
    font-size: 24px;
    font-weight: bold;
    padding: 16px 32px;
    border-bottom: solid 1px #808080;
  }
  
  .dialog-body p {
    margin: 16px 0 4px 28px;
    color: gray;
  }
  
  .radio-option {
    padding: 0 36px;
    list-style-type: none;
    position: relative;
  }
  
  .radio-option input {
    outline: none;
    margin-right: 12px;
  }
  
  .radio-option label {
    display: block;
    height: 24px;
    cursor: pointer;
    padding: 1.25em 0;
  }
  
  .dialog-footer {
    border-top: solid 1px #808080;
    margin-top: 24px;
    text-align: right;
    padding-right: 16px;
  }
  
  .dialog-btn {
    background: transparent;
    border: none;
    color: #003c8f;
    font-size: 16px;
    margin: 8px 0;
    padding: 8px 16px;
    outline: none;
    min-width: 96px;
    display: inline-block;
  }
  
  .footer {
    text-align: center;
    color: white;
    background-color: #49599a;
    margin: 44px 0 0 0;
    padding: 8px;
  }
  
  .footer a {
    color: white;
  }
  
  .about-dialog-content {
    max-width: 720px;
  }
  
  .card-group {
    overflow: hidden;
    width: fit-content;
    margin: 0 auto;
    padding: 16px 0;
    display: flex;
  }
  
  .dialog-card {
    padding: 16px;
    margin: 8px;
    max-width: 160px;
  }
  
  .about-card-quote {
    color: #606060;
    font-size: 14px;
    margin-top: 16px;
  }
  
  .about-card-img {
    margin: 16px auto;
    overflow: hidden;
    border-radius: 50%;
    box-shadow: 0 0 4px 0 rgba(0, 0, 0, 0.14);
    width: fit-content;
  }
  
  .about-card-img img {
    width: 96px;
    height: auto;
  }
  
  .about-card-title {
    font-size: 16px;
    margin: 8px 0;
  }
  
  .about-card-content {
    font-size: 15px;
    margin: 4px 0;
  }
  
  .more-option-div {
    position: static;
    display: inline-block;
    margin-right: 16px;
  }
  
  .more-option-list {
    display: block;
    position: absolute;
    background-color: #fff;
    overflow: hidden;
    box-shadow: 0px 8px 10px 1px rgba(0, 0, 0, 0.14);
    right: 18px;
    z-index: 25;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.6, 1);
  }
  